Waterproof covering



Nimh 2 1926.

`1,574,886 o. A. HEPPr-:s ET A.

WATERPROOF `COVERING Original Filed Jan.- l2, 1922 Patented Mar. y2,l 1926.

UNITED STATES AiuiTaNT oFFicaf OTTOA. HEPPES, OF CHICAGO, ILLINOIS; AND 'WAITER H. CADY, OF BOSTON, MASSA- CHUSETTS, ASSIGNORS TO vTHE FLINTKOTE COMPANY, OF BOSTON, MASSACHU SETTS, A CORPORATION OF MASSACHUSETTS.

WATERPROOF COVERING.

Application i'iled January 12, 1922, Serial No. 528,880. Renewed July 27, 1925.

[o all 10710211, it mmg/ cancelar.'

Be it known that we, OT'ro Hisrriss and V lVAL'i'nii H. CADY, both citizens of the 'United Statesbresiding at Chicago, in the county ofCook and State o f Illinois, Vand Boston, county of Suffolk, and State of Massachusetts, respectively, have invented certain new and useful Improvements in Waterproof Coverings, ofwhich the following is a speciication.

This invention relates to waterproof covering and refers more particularly to a board-like covering to be used where a stiff waterproof board would be applicable,pas in l5 Siding, interior walls in place of plasterboard now in common use or for roof coverinc.

tmong the important objects of the' invention are to provide a waterproof coverto ing whichcombined with-its Waterproof qualities, is lighter in weight and has an inherent stiffness of character Which is neces-v sary in its use as a siding or wall covering; to provide acovering which is cheaply made and easily laid and one which presents an attractive appearance, and due to the air spaces which are formed in its structure, prevent the accumulation of dampness which is objectionable in material of this m character. v

' Fig. 1 is a fragmentary sectional view of Qne type of a covering. p

Fig. 2 depicts a modified form, and 1n Fig. 3 is shown a further modification of 15 the covering in section. i

Referring to the drawings 1n Fig.. 1 is shown a perforated paper board 1 which is of considerable thickness and is underlaid by. expanded metalscreening as shown at M Within the body o'r' the structure 1s positioned a Wire mesh 3 overlaid by a felted sheet 4f which may or may not befsaturated with asphaltic bituminous or o ther waterproofing material. Above this is a coating 0i' layer 5 of an adhesive substance such as asphalt or other bitumens and this coating is overlaid with a surfacing 6 of stone, gravel or lighter granular material.

In Fig. 2 is shown a similar type of coycring comprising a lower base 7, having in its lower face a` plurality of formed ducts 8 and a keystone design produced' on. its -upper face. Into the keystone design is laid a mastic Waterprooiig substance sach as ae- .phalt or other mastic material as shown at 9 and upon this is placed a felted-fibi'ous material 1() which may or may not be saturated or impregnated with lawaterproofing substance.l The felted sheet is overlaid with an adhesive substance 11 whichl serves to coat the felted sheet 10 and cause the granu-i,

lar ,surfacing material 12l to adhere to the i structure. Through the body of the base T is a wire mesh 18 which while permittiiigi more or less iiexibility of the covering at the same time gives the structure an inherent strength and stiffness which prevents cracking or disrupting the covering and produces a firmer bond between the base material.

In Fig. 3 the base 14 is somewhat similar to the base shown in Fig. 2, thematerial being` formed to produce a series of lower grooves or passages 15 and upper ducts 16, the mesh wire 17 improving to a marked degrec the strength and` stiffness of the base.

'In the latter iigure the keystone design is replaced by a rectangular construction and instead of filling the up er ducts or passages 16 with a waterproof) mastic substance, a fibrous felted. sheet 18 impregnated with waterproofing material or having a waterproofing material bonded in the body of the felt, overlays the upper surface of the base. About the waterproof fibrous sheet isa second felted sheet 19 V which may or may not contain a waterproofing substance, and the upper surfaceof this' sheet is.' coated with an adhesive substance-20 and surfaced with a stone or gravel surfacing 21 as previously explained. In place of granular surfacing material where the covering is to be used for interior work, a paint surface or 'any other type of decoration may be used.

The base of a building board, siding or roofing materialof this character may be rolled or pressed from any cheap paper stocker feltcd fibrous substance, and'during the forming thereof, the wire mesh positioned within the body of the stock. In 'fitting tliesheets together, the particulartype of coverings for such a base and the mode of overlaying them will vary with the purpose for which the covering is to be used. ltis understood, of course, where there are two felted fibrous sheet materials, either waterproofed or otherwise, overlaying each other or laying next to the base material, it

will be necessary to interpose therebetween an adhesive substance such as one of the common bitiimens or `pitch substance well known 1n this art. When the upper surface of the material is to be covered with a` design or color other than the granular sur.- facing., the upper surface of the exposed sheet may be sized or covered with a covering such as stearine pitch or numerous other coatings susceptible of takingcolors.

In Fig. 3 is shown a mode of 'abutting the edges and ends of the covering so as to present when finally laid, a unitary structure. The covering may be used as explained, for siding, interior wall board, niiinerable other buildingpurposes where a light, stiff, strong, waterproof covering is desired.

In addition to its strength and Water# prootiiig qualities, the feature of an air circulation in the body or structure of the covering, .improves materiall adaptation of this covering to interior an exterior Work, as

dainpness is readily carried of vby the air' circulation.

lVe claim as our invention:

1. A waterproof covering, comprising a relatively heavy'tibrous board,A having air circulating ducts shaped therein, a pluralityT plies of fibrous material and waterproofing substances imposed upon the base to form a unitary structure.

2. A waterproof covering, comprising a roofing and iii-v relatively heavy base of reinforced fibrous board havingcliannelled ducts formed in its surfaces, a plurality of siipeiiinposed layers material and waterproofing substance overlaying ,the base and forming therewith a relatively stili unitary structure. g

3. A waterproof covering, comprising a relatively heavy base of reinforced fibrous board having cliannelled ducts formed in its surfaces, a plurality of 'superimposed vlayers of' slieeted librousinaterial and waterproofing substance alternately laid to form a compact resilient waterproofing board.

4. A waterproof covering, comprising a relatively heavy base of reinforced fibrous board having channelled ducts formed in its surfaces, a plurality of layers of waterproof saturated material and relatively resilient waterproofing substances incorporated with the base to form a stiff unitary structure.

5. A Waterproof covering, comprising, a relatively heavy base of reinforced fibrous board havingichannelled ducts formed in its surfaces, a plurality of layers of Waterproof saturated material and relatively re` silient waterproofing substances, the top layer suifaeed'with an adhesive coating and a granular surfacing and the entire bonded into a unitary structure.

' OTTO A. HEPPES.

WALTER H. CADY. 

